Mechanism for nodulizing materials.



, it!!! I Patented Dec. 9, 1913.

L. P. ROSS.

MECHANISM FOR NODULIZING MATERIALS.

APPLICATION FILED AUG.1, 1912.

ATTORNEY.

COLUMBIA FLANOGIAPH 50.. WASHINGTON. D. c.

STATPELS PEEN l" lttlE.

LEWIS P. ROSS, OF STANDISH, NEVT YURK, ASSIGNOR OF ONE-HALE? TO NORTHERN IRON COMPANY, A CORPORATION OF NEW' YORK.

MECHANISM FOR NOD'ULIZING- MATERIALS.

To all whom it may concern Be it known that l, Lewis P. Ross, a citinon of the United States, residing at Standish, in the county oi Clinton and State of New York, have invented Improved Mocha nisin for Nodulizing Materials, of which the following is a specification.

invention relates to the nodulization or such materials as fine ores, flue dust, cementand the like in rotary or turning inclined kilns, and its chief purpose is to provide a self cleaning construction.

its is well known, materials that are heated and rolled in the usual nodulizing kilns adhere to the kiln linings, with the formation of rings which reduce the kiln passage and interfere with the operation so that frequent stoppages are necessary for the purpose of breaking out these rings.

in my invention, in its preferred form, the kiln is provided with cooling means so disposed that there are sections of low temperature in its lining or wall, providing zones where the adhesion is reduced or substantially eliminated, between which the adhering material accumulates in substantially separate sections which fall by their own weight due to their lack of support.

The characteristics of my improvements are fully disclosed in the following description and the accompanying drawings in illustration thereof.

In the drawings, Figure 1 is a longitudinal sectional elevation of a kiln embodying my improvements; Fig. 2 is an enlarged sectional view taken on the line 2-2 of Fig. 1; Fig. 3 is an enlarged sectional view taken on the line 33 of Fig. 1; Fig. 4 is a sectional view on an enlarged scale of means for delivering the cooling fluid to the rotating circulating system, and Fig. 5 is a plan view of a section of the circulating system.

The mechanism, as illustrated in the drawings, comprises the inclined kiln 1 carried by the rollers 2 on the bearing blocks 3 and revolved by the circular rack l thereon which engages the gear wheel 5 driven by the gear train 6, the upper end of the kiln receiving the material through the feed pipe 7 and discharging, through the flue 8 and stack 9, waste products of combustion from the flame delivered by the burner 10 carried by the hood 11 at the lower end of the kiln. The lower section of the kiln, where the downwardly moving and rolling materials Specification of Letters Patent.

Application filed August 1, 1812.

Patented llrec. $9, 1913. Serial No, 712,699.

are in adhesive condition, is provided with a water circulating system comprising, in the specific form used, bronze castings 12 containing the tortuous passages 13, which castings are arranged in sets in longitudinal sections of the kiln and the respective passages connected by the tl-shaped pipe couplings 14:,these castings being disposed within and secured by bolts 15 to the kilns shell 16, through which the ends of the couplings it pass. The connected passages through the castings are oined at their opposite ends by bent pipe couplings 1 1, to the circular hollow rings or channels 17 formed by the angles 17 fixed on the kiln so as to provide an open slot 17 between them. These rings rotate within the stationary hollow rings or channels 18 and between the plate rings or flanges 18 fixed on the rings 18, the latter having the slots or openings 18 registering 'ith the slots or openings 1? and pipes 19 for supplying and discharging water. Packing rings 20 are shown disposed between the rings 17 and 18 and between the rings 18. As the water flowing through the cooling system keeps the cooled longitudinal sections of the kiln at such temperature that the material in process of nodulization will not adhere in the region thereof in any substantial degree, the material which adheres to the longitudinal sections of the kiln, between the branches of the cooling system, builds up to a limited extent and then falls by its own weight due to its lack of the support which exists where a ring of comparative uniformity in thickness is formed as in the usual operations.

l/Vhile the cooling system may be extended throughout any desired part of the circumference of the kiln, with resultin advantage in preventing the undesirable adhesion, the extension would have the disadvantage of reducing the temperature and n'iight be objectionable as compared with the method of cooling only longitudinal sections of the lower part oi. the kiln which does not substantially affect the etliciency ot' the nodulizing operation.

Having described my invention, 1 claim: 1. A rotary kiln having a shell, separable sections fixed to said shell and containing water circulating passages, means for connecting the passages of the several sections, and means for supplying water to said sections during the rotation of said kiln, said means comprising a hollow ring fixed on said kiln and a hollow ring within which said first named ring revolves.

2. A rotary kiln containing separable sections provided with communicating water passages, a hollow ring fixed to said kiln in communication with said passages, and a stationary hollow ring encircling said ring first named and communicating therewith.

8. A rotary kiln having longitudinal sections each containing blocks provided with communicating water passages, hollow rings fixed to said kiln in communication with the ends of the respective water passages, and stationary hollow rings within which said 5 rings first named rotate, said stationary and movable rings having communicating passages.

In witness whereof I have hereunto set my name this 19th day of July, 1912, in the 20 presence of the subscribing witnesses.

LEXVIS P. ROSS.

Witnesses:

J. F. POWELL, L. H. MOCLELLAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

